Welding Cart with Cable Management System

ABSTRACT

A welding cart with a cable management system may include a frame, a shelf adapted to support a welding machine, a plurality of upright members, a plurality of wheels supporting the cart, one or more pairs of holders disposed on one or more sides of the cart, and a removable bar that may be releasably secured to the one or more pairs of holders. The bar may be releasably secured to the holders via a pin-and-hole mechanism and may have a hook adapated to hold welding equipment such as cables. The bar may be releasably secured to a first pair of holders disposed on a side of the cart or a second pair of holders disposed on another side of the cart. This system provides additional, easily accessible storage space for welding tools and accessories while still being compatible with a wide variety of portable welding machines.

BACKGROUND

Welding is the process of joining two or more metals by heating thesurfaces of the metals to the point of melting. Welding has manyapplications and is used in many industries such as the automotiveindustry, construction industry, and manufacturing industry. Forexample, in the automotive industry, welding can be used to bond heatshields, exhaust systems, chassis, and hydraulic lines. In theconstruction industry, welding can be used to form connections inbuildings bridges, and other infrastructure. In the manufacturingindustry, welding can be used to form furniture pieces such as officedesks and file cabinets, HVAC units such as heating, ventilation, andair conditioning units, and frames for farm equipment.

There are many types of welding processes, the main types being MIGwelding, TIG welding, arc welding, and flux core arc welding. Each ofthese welding processes produces different weld properties and, as such,each welding process is best suited for certain applications. Forexample, TIG welding produces high quality, precise welds and can beused for welding a variety of metals. MIG welding, on the other hand,uses wire as a filler to produce cleaner welds better suited for metalssuch as steel and aluminum.

Welding Machines

Different welding processes require different welding machines. Forexample, MIG and flux welding requires a MIG-type welding machine andTIG welding requires a TIG-type welding machine. Examples of portableMIG welding machines include the VULCAN OMNIPRO 220, MILLER MULTIMATIC255, and LINCOLN ELECTRIC POWER MIG 210.

Because wire feed (MIG) welding uses wire as a filler to join twometals, MIG welding machines must continuously feed wire onto theworkpiece during welding. As such, MIG welding machines house areplaceable spool of wire inside the machine. When the wire is depleted,the wire spool must be replaced with a new one. In most MIG machines,the wire spool can be accessed by lifting a door on the side of themachine. The side on which the door is located may differ betweenwelding machines. The door therefore may be disposed on the right sideof one welding machine and the left side of another. For example, thedoor of the VULCAN OMNIPRO 220 is located on the right side of thewelding machine while the door of the MILLER ELECTRIC MULTIMATIC 255 islocated on the left side.

Wire feed welding machines may come in varying sizes. Some weldingmachines are small enough to be considered portable. While portablemachines are relatively smaller than larger industrial welding machines,they still may be too large and heavy for one person to convenientlytransport. As such, a welding cart is usually needed to hold andtransport portable welding machines.

Welding Carts

Many conventional welding carts have a surface for supporting a weldingmachine, but lack sufficient storage space for welding tools andaccessories, such as helmets, torches, cables, leads, gas hoses, andreplacement wire spools. Further, any limited storage space that isavailable may not be easily accessible.

Welding cables, leads, and gas hoses (collectively called “cables”) canbe particularly difficult to store because they are thick and long. Forexample, a welding cable may be between about 5 feet and about 25 feetlong. Typically, when the cables are not in use, they are wrapped aroundthe welding machine, hung over the handles of welding cart, or set onthe bottom upper shelf of welding cart. These cable storage methods canbe difficult, disorganized, and unsecure. As an alternative, cables mayalso be stored on a wall or other separate surface. This method makesshutdown and startup more difficult and time consuming because thecables must be attached and detached from the welding machine with everyuse.

SUMMARY

A welding cart with a cable management system may include an uppershelf, a lower shelf disposed below the upper shelf, a frame, aplurality of upright members, a plurality of wheels supporting the cart,and a cable management system.

The cable management system may include a first pair of holders disposedon a side of the cart. The first pair of holders may further include amounting arm and a support arm, and the support arm may further includea hole adapted to receive a pin on a bar.

The cable management system may further include a second pair of holdersdisposed on a side of the cart. The second pair of holders may bedisposed on a side of the cart opposite the first pair of holders. Thesecond pair of holders may further include a mounting arm and a supportarm, and the support arm may further include a hole adapted to receive apin on a bar.

The cable management system may further include a bar. The bar mayinclude a hook. The hook may have a prong adapted for securing cablesand other tools on the hook. The bar may further include a pin adaptedto fit into a hole in the support arm of a holder. The bar may includetwo pins disposed on opposite ends of the bar and each adapted to fitinto a corresponding hole in adjacent holders.

The bar may be releasably secured to the first pair of holders or thesecond pair of holders. Whether the bar is releasably secured to thefirst pair of holders or the second pair of holders may depend on thespecific needs of the user or the configuration of the welding machine.Specifically, the bar may be releasably secured to a pair of holdersdisposed on the side of the cart opposite the door of the weldingmachine.

For example, if the first pair of holders is disposed on the same sideof the cart as the door of the welding machine, the bar may be placed onthe second pair of holders disposed on the opposite side of the cart.Accordingly, the space in front of the door may remain clear such thatthe door may be freely opened and closed. If, on the other hand, thesecond pair of holders is disposed on the same side of the cart as thedoor of the welding machine, the bar may be placed on the first pair ofholders.

Further, the bar may be freely transferred between the first pair ofholders and second pair of holders as needed.

This flexibility of the cable management system gives the welding cartincreased storage capacity while also allowing the welding cart to beused with various types and configurations of welders.

Other systems, methods, features, and technical advantages of theinvention will be, or will become apparent to one with skill in the art,upon examination of the figures and detailed description. It is intendedthat all such additional systems, methods, features and technicaladvantages be included within this summary and be protected by theclaims.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a front perspective view of an exemplary welding cart with thebar of an exemplary cable management system disposed on the near side ofthe welding cart. An exemplary bar is also represented in broken lineson the far side of the cart to illustrate that the bar can be placed oneither side of the welding cart.

FIG. 2 is a right elevation view of an exemplary cable management systemwith an exemplary cable illustrated in broken lines.

FIG. 3a is a rear cross-section view of an exemplary cable managementsystem showing the pin of a bar being inserted into the hole and sleeveof a holder,

FIG. 3b is a rear cross-section view of an exemplary cable managementsystem showing the pin of a bar releasably secured in the hole andsleeve of a holder.

FIG. 4 is a front perspective view of an exemplary cable managementsystem showing the pin of a bar being inserted into the hole and sleeveof a mounted holder.

FIG. 5 is a front perspective view of an exemplary hook of a cablemanagement system.

FIG. 6 is a front perspective view of a welding cart supporting aportable welding machine and having an exemplary cable management systemdisposed on the near side of the cart.

DETAILED DESCRIPTION OF THE DRAWINGS

1.0 Welding Cart Overview

Referring to the drawings and initially to FIG. 1, a perspective view ofan exemplary welding cart 100 is shown. Welding cart 100 may include aframe, which may further include one or more support frames 200, a lowershelf 300 attached to each support frame 200, an upper shelf 400attached to each support frame, a plurality of upright members 500 twoof which may include a handle 510, a plurality of wheels or casters 610,620 supporting the cart, and a transferable cable management system 700that includes a first pair of holders 710 a disposed on a side of thewelding cart 100, a second pair of holders 710 b disposed on an oppositeside of the welding cart 100, and a bar 720 releasably secured to eitherthe first pair of holders 710 a or the second pair of holders 710 b, thebar having at least one hook 730.

Referring to FIG. 6, in operation, upper shelf 400 of welding cart 100may be used to support a welding machine 800. Welding machine 800 may bea portable wire feed welding machine which feeds wire through a cableand out a nozzle located at the tip of a torch. A wire spool may bedisposed on spindle located inside welding machine 800 and accessed bylifting hinged door 830 disposed on the side of welding machine 800, asshown in FIG. 6.

When the wire on wire spool is depleted, the wire spool may bereplaced—a process that requires opening the welding machine door 830.When replacing the wire spool, door 830 must be pulled outward andupward, and lifted above welding machine 800, as shown in FIG. 6. Thus,the space in front of door 830 must be clear of any objects duringreplacement of the wire spool. As described above, the door may belocated on different sides of different welding machines.

Welding requires the use of many tools and accessories, such as helmets,cables, leads, hoses, and wire spools. While lower shelf 300 of weldingcart 100 may be able to hold some of these objects, additional space maybe required. As described above, cables are particularly difficult tostore on welding carts because of their length and thickness. A cablemanagement system 700 located on the side of welding cart 100 mayprovide additional, easily-accessible storage space for welding toolsand accessories, such as cables 900.

As further described above, because the door of the welding machine maybe located on different sides of different welding machines, a rackfixed on one side of welding cart 100 may limit use of the cart tocertain welding machines.

A welding cart may therefore include a cable management system 700 thatcan be placed on either side of the welding cart 100. The side of thewelding cart on which the cable management system 700 is placed maydepend on the configuration of the welding machine 800 disposed on thecart 100. For example, if the door 830 is located on one side of thewelding machine 800, then the cable management system 700 may be locatedon an opposite side of the welding cart 100 such that the door 830 ofthe welding machine 800 may be freely opened.

2.0 Exemplary Frame

The welding cart may include a frame. The frame may be adapted tosupport a welding machine disposed on an upper shelf. As shown in FIG.1, the frame may include one or more support frames 200. For example, asshown in FIG. 1, the frame may include a pair of support frames 200.Each support frame 200 may have an upper arm 210, a lower arm 220, and asubstantially vertical arm 230 that connects one end of upper arm 210 toone end of lower arm 220. The length of upper arm 210 may besubstantially equal to the length of lower arm 220, or alternatively,upper arm 210 may be shorter in length than lower arm 220, as shown inFIG. 1. Each substantially vertical arm 230 may have a height. Eachsupport frame may have one or more additional substantially verticalarms connecting upper arm 210 and lower arm 220 for added stability. Forexample, a support frame 200 may have two substantially vertical armsconnecting the upper arm and lower arm of the support frame such thatthe support frame forms a rectangular shape.

In one embodiment, the upper arm 210 and lower arm 220 of each supportframe 200 may be substantially parallel to one another. Alternatively,as shown in FIG. 1, upper arm 210 of each support frame 200 may beoblique to corresponding lower arm 210 of each support frame 200.

As shown in FIG. 1, support frames 200 may be disposed on opposite sidesof a lower shelf 300. The support frames 200 may further be disposedsuch that the substantially vertical arm 230 of each support frame 200is disposed substantially normal to the lower shelf 300 and such thatupper arm 210 is positioned above lower arm 220.

In one embodiment, as shown in FIG. 1, the lower arm 220 of each supportframe 200 may be attached to opposing sides of lower shelf 300. Forexample, the lower arm 220 of one support frame 200 may be attached toone side of the lower shelf 300 and the lower arm 220 of the opposingsupport frame 200 may be attached to an opposite side of the lower shelf300.

In one embodiment, as shown in FIG. 1, lower shelf 300 may be disposedon top of lower arms 220 of support frames 200. Alternatively, lowershelf 300 may be positioned beneath lower arms 220 of support frames200. Alternatively, opposing side surfaces of lower shelf 300 may beattached to an inside surface of each lower arm 220.

The support frames 200 may be attached to lower shelf 300 by anysuitable attachment mechanism such as a nut and bolt assembly 310 asshown in FIG. 1, or a cotter pin. The support frames 200 may further beconnected to each other by one or more crossbars that extend between thesupport frames 200 for additional stability. For example, one or morecrossbars may connect both upper arms 210 of support frames 200.Additionally or alternatively, one or more crossbars may connect bothsubstantially vertical s 230 of support frames 200.

The support frames 200 may further include one or more holes throughwhich bolts, axles or other elongated components may be inserted. Eachhole in a support frame may pass through a portion of the support frame200 or may pass entirely through the support frame 200. In oneembodiment, the lower arm 210 of each support frame may include a hole.Further, a hole in lower arm 220 of one support frame 200 may align witha hole in lower arm 220 of an opposing support frame 200 such that anaxle or other elongated member may be inserted through the holes andconnect the support frames 200.

3.0 Exemplary Lower Shelf 300

As shown in FIG. 1, welding cart 100 may include a lower shelf 300connected to support frames 200. As described more fully above, and asshown in FIG. 1, lower shelf 300 may be disposed on top of the lower arm220 of each support frame 200. Alternatively, lower shelf 300 may bedisposed underneath the lower arm 220 of each support frame 200.Alternatively, opposing side surfaces of lower shelf 300 may be attachedto an inside surface of each lower arm 220.

As described above, lower shelf 300 may be connected to support frames200 by any suitable attachment mechanism, such as a nut and boltassembly 310, as shown in FIG. 1, or a cotter pin. As shown in FIG. 1,lower shelf 300 may be attached to the lower arms 220 of support frames200 at points near the corners of lower shelf 300. Additionally oralternatively, lower shelf 300 may be attached to the lower arms 220 ofsupport frames 200 at one or more points along the side of lower shelf300.

Lower shelf 300 may have a length and a width and may be adapted toaccommodate a portable welding machine. Lower shelf 300 may extend alonga portion of the lower arms 220 of the support frames 200, oralternatively, as shown in FIG. 1, lower shelf 300 may extend alongsubstantially the entire length of lower arms 220.

In addition to connecting support frames 200 and providing stability towelding cart 100, lower shelf 300 may be used as a surface on which toset welding tools and accessories, such as welding helmets, wire spools,or other objects. Optionally, as described more fully below, the lowershelf 300 may be adapted to support a gas cylinder. For example, one endof the lower shelf 300 may adapted to support a gas cylinder.

In one embodiment, as shown in FIG. 1, one or more sides of lower shelf300 may include a lip 320 to prevent welding tools, welding accessories,gas cylinders or other objects placed on lower shelf 300 from fallingoff lower shelf 300.

4.0 Exemplary Upper Shelf 400

As shown in FIG. 1, welding cart 100 may further include an upper shelf400 connected to support frames 200. Upper shelf 400 may be adapted tosupport a portable welding machine. As shown in FIG. 1, upper shelf 400may be connected to support frames 200 such that upper shelf 400 isdisposed on top of an upper arm 210 of each support frame.Alternatively, upper shelf 400 may be connected to the support frames200 such that upper shelf 400 is disposed underneath upper arm 210 ofeach support frame 200. Alternatively, upper shelf 400 may also beconnected to support frames 200 such that opposing side surfaces ofupper shelf 400 are attached to an inside surface of each upper arm 210.

In one embodiment, upper shelf 400 may be disposed substantiallyhorizontal on upper arms 210 of support frames 200. Alternatively, asshown in FIG. 1, upper shelf 400 may be disposed on upper arms 210 ofsupport frames 200 such that upper shelf 400 is angled upward ordownward. For example, upper shelf 400 may be tilted at an angle ofbetween about 0° and about 30°, More preferably, upper shelf 400 may betilted at an angle of between about 5° and about 25°. Even morepreferably, upper shelf 400 may be tilted at an angle of between about10° and about 20°. In one embodiment, upper shelf 400 may be tilted atan angle of about 15°.

Upper shelf 400 may be connected to support frames 200 by any suitableattachment mechanism, such as a nut and bolt assembly 410, as shown inFIG. 1, or a cotter pin. As shown in FIG. 1, upper shelf 400 may beattached to the upper arms 210 of support frames 200 at points near thecorners of upper shelf 400. Additionally or alternatively, upper shelf400 may be attached to the upper arms 210 of support frames 200 at oneor more points along a side of upper shelf 400.

As shown in FIG. 1, upper shelf 400 of the welding cart 100 may have alength and a width. The length and width of the upper shelf may beadapted to hold a welding machine. The length and width of upper shelf400 may further be adapted to hold a portable welding machine, such as aportable MIG welding machine. In one embodiment, the length and width ofupper shelf 400 may be substantially equal. In one embodiment, thelength of upper shelf 400 may be less than or equal to the length oflower shelf 300, As shown in FIG. 1, upper shelf 400 may extend along aportion of upper arms 210 of support frames 200 or along the entirelength of upper arms 210 of support frames 200.

As shown in FIG. 1, one or more sides of upper shelf 400 may include anupwardly extending lip 420 to prevent the welding machine or otherobjects placed on upper shelf 400 from falling off upper shelf 400.Upper shelf 400 may also include one or more downward extending lips.The one or more downward extending lips may overlap the upper arm 210 ofa support frame 200. The one or more downward extending lips may beconnected to the corresponding upper arm 210.

As shown in FIG. 1, upper shelf 400 may further include one or morestationary tabs 430. The one or more stationary tabs 430 may extendupwards from upper shelf 400. A welding machine placed on upper shelf400 may rest against the one or more stationary tabs 430 such that thewelding machine may be secured in position on upper shelf 400 andprevented from sliding along upper shelf 400.

As shown in FIG. 1, upper shelf 400 may further include one or moreadjustable tabs 440 extending upward from upper shelf 400. The one ormore adjustable tabs 440 may be disposed opposite one or more stationarytabs 430. The one or more adjustable tabs 440 may be adjusted to restagainst one end of a welding machine to secure the welding machine inplace on upper shelf 400. The adjustable tabs 440 may further beadjusted such that they secure the welding machine against one or moreopposing stationary tabs 430.

As shown in FIG. 1, adjustable tab 440 may be adjusted on upper shelf400 by a slot mechanism. The slot mechanism may comprise one or moreslots 450 in upper shelf 400 along which adjustable tab 440 slides.Adjustable tab 440 may therefore be adjusted along slots 450 to securevarious sizes of welding machines on upper shelf 400.

As shown in FIG. 1, upper shelf 400 may further include one or morerecesses 460 configured to receive a gas cylinder. In one embodiment,recess 460 in upper shelf 400 may be adapted to receive a gas cylinderdisposed on lower shelf 300. Upper shelf 400 may further include a chain462 for securing a gas cylinder in recess 460.

As shown in FIG. 1, upper shelf 400 may further include one or moretoolbox holders 470 adapted to receive a toolbox 472. The tool boxholder 470 may be operatively connected to upper shelf 400, supportframes 200, or both upper shelf 400 and support frames 200,

5.0 Exemplary Upright Members 500

As shown in FIG. 1, welding cart 100 may further include one or moreupright members 500. The upright members 500 may be used for maneuveringthe cart 100 or may provide additional stability to the welding cart100. As shown in FIG. 1, each upright member 500 may be attached to asupport frame 200. More specifically, each upright member 500 may beattached to a substantially vertical arm 230, upper arm 210, or lowerarm 230 of a support frame 200. As shown in FIG. 1, each upright member500 may be attached to a support frame 200 such that upright member 500is disposed substantially vertically.

Each upright member 500 may have a height. Each upright member may beattached to a support frame 200 at one or more points along the lengthof the support frame 200, or at one or more points along the height of asubstantially vertical arm 230 of the support frame 200. For example, asshown in FIG. 1, an upright member 500 may be attached to a supportframe 200 at an end distal to the substantially vertical arm 230.Alternatively, an upright member 500 may be attached to a support frameat an end proximate the substantially vertical arm 230 or, as shown inFIG. 1, an upright member 500 may be attached directly to thesubstantially vertical arm 230 of a support frame 200.

Welding cart 100 may have two or more upright members 500 (four areshown in the embodiment illustrated in FIG. 1). A pair of uprightmembers 500 may be connected to opposing support frames 200. In oneembodiment, two upright members 500 may each be connected to an opposingsupport frame 200 proximate the substantially vertical arm 230 of thesupport frame 200. As shown in FIG. 1, a pair of upright members 500 maybe connected directly to opposing substantially vertical arms 230 ofsupport frames 200.

Additionally or alternatively; a pair of upright members 500 may each beconnected to opposing support frames 200 at an end distal to thesubstantially vertical arms 230 of the support frames 200. In oneembodiment, each upright member 500 may be connected to upper arm 210 orlower arm 220 of the corresponding support frame 200. Each uprightmember 500 may further be connected to both the upper arm 210 and thelower arm 220 of corresponding support frames 200.

In one embodiment, as shown in FIG. 1, welding cart 100 may include fourupright members 500. As shown in FIG. 1, a pair of upright members 500may each be connected directly to substantially vertical arms 230 ofopposing support frames 200 and a pair of upright members 500 may eachbe connected to an end of opposing support frames 200 distal thesubstantially vertical arm 230 of the corresponding support frame 200.As shown in FIG. 1, upright members 500 positioned distal thesubstantially vertical arm 230 may each be connected to both upper arm210 and lower arm 220 of the corresponding support frame 200 foradditional stability.

As shown in FIG. 1, a pair of opposing upright members 500 may beconnected to form a tank support 530. As shown in FIG. 1, the terminalends of a pair of opposing upright members 500 may be connected to formtank support 530. As shown in FIG. 1, tank support 530 may be disposedsubstantially normal to support frames 200. Tank support 530 may furtherinclude a recess 520 configured to receive a gas cylinder. Tank support530 may further include a chain 522 for securing a gas cylinder inrecess 520.

As shown in FIG. 1, one or more upright members 500 may include a handle510 for steering. Each handle 510 may be disposed at a terminal end of acorresponding upright member 500. As shown in FIG. 1, each handle 510may further include a grip 512. Each grip 512 may be comprised ofrubber, plastic, foam, or any other material that has an increasedfriction surface. Each grip 512 may be substantially smooth or, as shownin FIG. 1, may include a grip pattern.

Each handle 510 may include a bend 514. The bend may be an S-bend, asshown in FIG. 1, a quarter 90 degree bend, or any other type of bend. Asshown in FIG. 1, each bend 514 may be positioned proximate a terminalend of the corresponding upright member 500. As shown in FIG. 6, eachbend 514 may extend outward from welding cart 100 such that userinterface 840 of welding machine 800 may be easily accessed. As shown inFIG. 1, each bend 514 may extend outward from welding cart 100 at a 45degree angle, making user interface 840 of welding machine 800 moreeasily accessible to the user.

6.0 Exemplary Wheels

Welding cart 100 may include a plurality of casters and/or wheels 610,620 supporting welding cart 100. As shown in FIG. 1, each caster and/orwheel 610, 620 may be operatively connected to lower shelf 300 orsupport frames 200. As shown in FIG. 1, each caster or wheel 610, 620may be operatively connected to both lower shelf 300 and a correspondinglower arm 210 of a support frame 200. Each caster and/or wheel 610, 620may be operatively connected to welding cart 100 via a nut and boltassembly, cotter pin, or any other suitable attachment mechanism.

One or more of wheels may be casters. For example, as shown in FIG. 1, apair of casters 610 may be disposed opposite each other at one end ofwelding cart 100. As shown in FIG. 1, a pair of casters 610 may bedisposed proximate one or more upright members 500.

Additionally, or alternatively, one or more pairs of wheels may beconnected to the welding cart via an axle. For example, as shown in FIG.1, a wheel 620 may be disposed at each end of an axle inserted through ahole in lower 220 of each support frame 200. In one embodiment, as shownin FIG. 1, welding cart 100 may have two wheels 620 disposed on an axleat one end of welding cart 100 and two casters 610 disposed at the otherend of welding cart 100.

7.0 Exemplary Transferable Cable Management System 700

As shown in FIGS. 1 and 2, welding cart 100 may include a cablemanagement system 700 comprising a bar 720 releasably secured to a firstpair of holders 710 a, Bar 720 may further comprise one or more hooks730 on which welding tools and accessories, such as a cables 900, may behung. First pair of holders 710 a may be mounted to a side of weldingcart 100. For example, as shown in FIGS. 1 and 2, first pair of holders710 a may each be mounted to an adjacent upright member 500.

As shown in FIG. 1, cable management system 700 may further comprise asecond pair of holders 710 b disposed on a side of welding cart 100.Second pair of holders 710 b may be disposed on a different side ofwelding cart 100 than first pair of holders 710 a. As shown in FIG. 1,for example, second pair of holders 710 b may be disposed on a side ofwelding cart 100 opposite first pair of holders 710 a. As alsoillustrated in FIG. 1, second pair of holders 710 a may each be mountedto an adjacent upright member 500.

The bar 720 may be releasably secured to the first pair of holders 710 aor the second pair of holders 710 b. Additionally, the bar 720 may befreely transferred from first pair of holders 710 a to second pair ofholders 710 b, and back to first pair of holders 710 a as necessary. Inone embodiment, as shown in FIGS. 3a and 3b , bar 720 may be releasablysecured to first pair of holders 710 a by a pin-and-hole mechanism 722,715. For example, as shown in FIG. 3, a hole 715 in each holder 710 amay receive a corresponding pin 722 extending from bar 720. Bar 720 maybe releasably secured to second pair of holders 710 b by a substantiallysimilar pin-and-hole mechanism. For example, a hole in each holder 710 bmay receive a corresponding pin 722 extending from bar 720.

7.1 Exemplary Holders 710 a and 710 b

An exemplary cable management system 700 may include one or more pairsof holders 710 a, 710 b. For example, as shown in FIG. 1, welding cart100 may include a first pair of holders 710 a disposed on a side of thewelding cart 100 and a second pair of holders 710 b disposed on a sideof the welding cart 100. Second pair of holders 710 b may be disposed ona different side of welding cart 100 than first pair of holders 710 a.For example, as shown in FIG. 1, second pair of holders 710 b may bedisposed on a side of welding cart 100 opposite first pair of holders710 a.

As shown in FIGS. 3a and 3b , each holder 710 a, 710 b may include amounting plate 712 and a support arm 714 extending from mounting plate712. Each holder 710 a, 710 b may further include a second arm 718extending from a side of support arm 714 opposite mounting plate 712.Each support arm 714 may further include a hole 715 adapted to receive apin 722 extending from a bar 720. Each support arm 714 may even furtherinclude a sleeve 716 extending from the hole 715 and adapted to receivethe pin 722 extending from the bar 720.

7.1(a) Exemplary Mounting plate 712

As shown in FIG. 4, mounting plate 712 of each holder 710 a, 710 b maybe operatively connected to an upright member 500 and positioned onupright member 500 such that support arm 714 of each holder 710 a, 710 bextends outward away from welding cart 100. Each mounting plate 712 maybe operatively connected to the corresponding upright member 500 via anut and bolt assembly 540, as shown in FIG. 4, a cotter pin, or anyother suitable mounting mechanism. Further, as shown in FIG. 4, eachholder 710 a, 710 b may be mounted to an upright member 500 proximate aterminal end of upright member 500.

As shown in FIG. 4, each mounting plate 712 may have a height and alength. For example, the length of each mounting plate may be betweenabout 10 mm and about 50 mm. More preferably, each mounting plate mayhave a length between about 20 mm and about 40 mm. Even more preferably,each mounting plate may have a length between about 25 mm and about 35mm. In one embodiment, each mounting plate may have a length of about 30mm. In one embodiment, each mounting plate may have a length of about 29mm. In one embodiment, each mounting plate may have a length of about 25mm.

The height of each mounting plate 712 may be greater than orsubstantially equal to the height of the bar 720. For example, theheight of each mounting plate may be between about 20 mm and about 110mm. More preferably, the height of each mounting plate may be betweenabout 40 mm and about 80 mm. Even more preferably, the height of eachmounting plate may be between about 50 mm and about 70 mm. Even morepreferably, the height of each mounting plate may be between about 55 mmand about 65 mm. In one embodiment, the height of the mounting plate maybe about 103 mm. In one embodiment, the height of each mounting platemay be about 80 mm. In one embodiment, the height of each mounting platemay be about 60 mm.

7.1(b) Exemplary Support Arm 714

As described above, and as shown in FIG. 4, each holder 710 a, 710 b mayfurther include a support arm 714 extending from mounting plate 712. Asshown in FIG. 4, each support arm 714 may have a length and a widthadapted to support a bar 720. The length of each support arm 714 may begreater than or substantially equal to the length of the correspondingmounting plate 712. For example, the length of each support arm may bebetween about 10 mm and about 50 mm. More preferably, each support armmay have a length between about 20 mm and about 40 mm. Even morepreferably, each support arm may have a length between about 25 mm andabout 35 mm. In one embodiment, each support arm may have a length ofabout 30 mm. In one embodiment, each support arm may have a length ofabout 29 mm. In one embodiment, each support arm may have a length ofabout 25 mm.

The width of each support arm 714 may be between about 10 mm and about80 mm. More preferably, the width of each support arm may be betweenabout 30 mm and about 70 mm. Even more preferably, the width of eachsupport arm may be between about 40 mm and about 60 mm. In oneembodiment, the width of each support arm may be about 50 mm.

As shown in FIGS. 3a and 3b , each support arm 714 may further comprisea hole 715 adapted to receive a pin 722 extending from a bar 720. Eachhole 715 may have a diameter greater than or substantially equal to thediameter of the pin 722 extending from the bar 720. For example, eachhole may have a diameter of between about 2 mm and about 20 mm. Morepreferably, each hole may have a diameter between about 5 mm and about15 mm. Even more preferably, each hole may have a diameter between about8 mm and about 13 mm. In one embodiment, each hole may have a diameterof about 10 mm.

In one embodiment, each hole 715 may be disposed at the center of acorresponding support arm 714. Alternatively, as shown in FIGS. 3a and3b , each hole 715 may be positioned proximate mounting plate 712. Inone embodiment, as shown in FIGS. 3a and 3b , a sleeve 716 may extenddownward from hole 715. Sleeve 716 may be adapted to receive a pin 722extending from a bar 720.

Each sleeve 716 may have a diameter substantially equal to the diameterof the corresponding hole 715. Each sleeve may have a height. The heightof the sleeve may be between about 2 mm and about 20 mm. Morepreferably, each sleeve may have a height of between about 5 mm andabout 15 mm. Even more preferably, each sleeve may have a height ofbetween about 7 mm and about 12 mm. In one embodiment, each sleeve mayhave a height of about 10 mm. The sleeve 716 may further terminate in afloor,

7.1(c) Exemplary Second Arm 718

As shown in FIGS. 3a and 3b , each holder 710 a, 710 b may furtherinclude a second arm 718 extending from a side of the support arm 714opposite the mounting plate 712. Each second arm 718 may be adapted tosecure one or more cables on the holder 710 a, 710 b.

Each second arm 718 may have a height and a length. The height of eachsecond arm may be between about 20 mm and about 130 mm. More preferably,the height of each second arm may be between about 60 mm and about 120mm. Even more preferably, the height of each second arm may be betweenabout 90 mm and about 110 mm. Even more preferably, the height of eachsecond arm may be between about 100 mm and about 105 mm. In oneembodiment, the height of the second arm may be about 103 mm. In oneembodiment, the height of each second arm may be about 90 mm. In oneembodiment, the height of each second arm may be about 60 mm. The heightof each second arm may be greater than or substantially equal to theheight of the corresponding mounting plate.

The length of each second arm 718 may be between about 10 mm and about50 mm. More preferably, each second arm may have a length between about20 mm and about 40 mm. Even more preferably, each second arm may have alength between about 25 mm and about 35 mm. In one embodiment, eachsecond arm may have a length of about 30 mm. In one embodiment, eachsecond arm may have a length of about 29 mm. In one embodiment, eachsecond arm may have a length of about 25 mm. The length of each secondarm may be substantially equal to the length of the correspondingmounting plate.

7.2 Exemplary Bar 720

As described above, and as shown in FIGS. 1 and 2, cable managementsystem 700 may include one or more bars 720 releasably secured to afirst pair of holders 710 a disposed on a side of welding cart 100 or asecond pair of holders 710 b disposed on an opposite side of weldingcart 100. Bar 720 may provide additional storage space for welding toolsand accessories, such as cables.

Bar 720 may have a height, a width, and a length. The bar may have aheight between about 10 mm and about 50 mm. More preferably, the bar mayhave a height between about 20 mm and about 40 mm. Even more preferably,the bar may have a width between about 25 mm and about 35 mm. In oneembodiment, the bar may have a height of about 30 mm. In one embodiment,the bar may have a height of about 29 mm. In one embodiment, the bar mayhave a height of about 25 mm.

The bar may have a width of between about 10 mm and about 50 mm. Morepreferably, the bar may have a width between about 20 mm and about 40mm. Even more preferably, the bar may have a width between about 25 mmand about 35 mm. In one embodiment, the bar may have a width of about 30mm. In one embodiment, the bar may have a width of about 29 mm. In oneembodiment, the bar may have a width of about 25 mm.

As shown in FIGS. 3a and 3b , the cross section of bar 720 may have asubstantially quadrilateral shape. Bar 720 may be solid or, as shown inFIGS. 3a and 3b , may be hollow. In one embodiment, the height and widthof bar 720 may be equal. For example, bar 720 may be formed fromstandard square bar stock. Bar 720 may be between about 10 mm square andabout 50 mm square. More preferably, the bar may be between about 20 mmsquare and about 40 mm square, Even more preferably, the bar may bebetween about 25 mm square and about 35 mm square. In one embodiment,the bar may be about 30 mm square. In one embodiment, the bar may beabout 29 mm square. In one embodiment, the bar may be about 25 mmsquare,

Alternatively, bar 720 may have a tubular shape with a diameter betweenabout 10 mm and about 50 mm. More preferably, the bar may have adiameter between about 20 mm and about 40 mm. Even more preferably, thebar may have a diameter between about 25 mm and about 35 mm. In oneembodiment, the bar may have a diameter of about 30 mm. In oneembodiment, the bar may have a diameter of about 29 mm. In oneembodiment, the bar may have a diameter of about 25 mm.

Bar 720 may be releasably secured to a pair holders 710 a, 710 b suchthat bar 720 does not slide off the holders 710 a, 710 b duringtransport. When necessary, bar 720 may be removed from the holders 710a, 710 b or transferred between holders 710 a and 710 b. Any suitablereleasable attachment mechanism may be used to releasably secure eachbar 720 to a pair of holders 710 a, 710 b. For example, as shown inFIGS. 3a and 3b , bar 720 may include one or more pins 722 extendingfrom a side of bar 720 and adapted to fit into a corresponding hole 715in a holder 710 a, 710 b.

Each pin 722 may have a diameter. Each pin may have a diameter that lessthan or substantially equal to the diameter of a hole in the holder. Forexample, each pin may have a diameter of between about 2 mm and about 20mm. More preferably, each pin may have a diameter between about 5 mm andabout 15 mm. Even more preferably, each pin may have a diameter betweenabout 8 mm and about 13 mm. In one embodiment, each pin may have adiameter of about 10 mm.

As shown in FIGS. 3a and 3b , each pin 722 may have a height. Each pinmay have height of between about 2 mm and about 20 mm. More preferably,each pin may have a height of between about 5 mm and about 15 mm. Evenmore preferably, each pin may have a height of between about 7 mm andabout 12 mm. In one embodiment, each pin may have a height of about 10mm

As shown in FIGS. 1 and 2, the length of bar 720 may greater than orsubstantially equal to the distance between two holes 715 each disposedin a pair of adjacent holders 710 a, 710 b. As shown in FIG. 2, each pin722 may be disposed proximate an end of bar 720. As shown in FIGS. 1 and2, the distance between the pins 722 on bar 720 may be substantiallyequal to the distance between two holes 715 or sleeves 716 each disposedin adjacent holders 710 a, 710 b. As such, each pin 722 may fit into acorresponding hole 715 or sleeve 716 in adjacent holders 710 a, 710 band bar 720 may be releasably secured in place on holders 710 a, 710 b,as shown in FIG. 1. If necessary, bar 720 may be temporarily removedfrom holders 710 a, 710 b or transferred between holders 710 a and 710b.

7.3 Exemplary Hook 730

A shown in FIGS. 1 and 2, each bar 720 may further include one or morehooks 730 adapted to receive welding tools or accessories, such aswelding cables 900. As shown in FIG. 5, each hook 730 may include a base732 and a pair of prongs 734 each extending from opposite sides of base732 in the same direction. Each hook 730 may be operatively connected tobar 720. In one embodiment, as shown in FIG. 4, each hook 730 may beoperatively connected to bar 720 such that prongs 734 of each hook 730receive bar 720.

As shown in FIG. 5, each prong 734 may have a height and a length. Theheight of each prong may be between about 20 mm and about 130 mm. Morepreferably, the height of each prong may be between about 60 mm andabout 120 mm. Even more preferably, the height of each prong may bebetween about 90 mm and about 110 mm. Even more preferably, the heightof each prong may be between about 100 mm and about 105 mm. In oneembodiment, the height of each prong may be about 103 mm. In oneembodiment, the height of each prong may be about 90 mm. In oneembodiment, the height of each prong may be about 60 mm. Each prong mayhave substantially the same height as another prong on the hook.

The length of each prong 734 may be between about 10 mm and about 50 mm.More preferably, each prong may have a length between about 20 mm andabout 40 mm. Even more preferably, each prong may have a length betweenabout 25 mm and about 35 mm. In one embodiment, each prong may have alength of about 30 mm. In one embodiment, each prong may have a lengthof about 29 mm. In one embodiment, each prong may have a length of about25 mm. Each prong may have substantially the same length as anotherprong on the hook.

In one embodiment, as shown in FIG. 4, base 732 of hook 730 may beoperatively connected to bar 720. Base 732 may be operatively connectedto bar 720 via a nut and bolt assembly, a cotter pin, or any othersuitable attachment mechanism.

As shown in FIG. 5, base 732 of each hook 730 may have a width and alength. The width of the base may be greater than or substantially equalto the width of the bar. For example, the width of each base may bebetween about 10 mm and about 80 mm. More preferably, the width of eachbase may be between about 30 mm and about 70 mm. Even more preferably,the width of each base may be between about 40 mm and about 60 mm. Inone embodiment, the width of each base may be about 50 mm.

The length of each base may be between 10 mm and about 50 mm. Morepreferably, each base may have a length between about 20 mm and about 40mm. Even more preferably, each base may have a length between about 25mm and about 35 mm. In one embodiment, each base may have a length ofabout 30 mm. In one embodiment, each base may have a length of about 29mm. In one embodiment, each base may have a length of about 25 mm.

As shown in FIG. 2, each prong may be adapted to receive and store awelding tool or accessory, such as a welding cable 900, and prevent thecable 900 disposed on hook 730 from sliding off hook 730 and falling toa side of bar 720 or falling off the welding cart 100 entirely.

Each bar may include one hook or a plurality of hooks. For example, abar 720 may include one hook 730. In one embodiment, as shown in FIGS. 1and 2, bar 720 may include two or three hooks 730 each positioned at adifferent point along the length of bar 720. In one embodiment, aplurality of hooks 730 may be evenly spaced along the length of the bar720.

7.4 Transferability of Cable Management System 700

As described above, wire feed welding machines may house wire spoolsthat are accessed by lifting a door on the side of the welding machine.Objects placed in front of the door may block the door from opening,thereby impeding replacement of the wire spool. Because differentwelding machines have doors on different sides, a fixed rack disposed onone side of the cart may limit the compatibility of the cart.

As shown in FIG. 6, if the welding cart 100 is being used with a weldingmachine 800 that has a door 830 located on the side of the weldingmachine 800, then the bar 720 may be releasably secured to a first pairof brackets 710 a disposed on a side of the welding cart 100 oppositethe door 830 of the welding machine 800, such that the door 830 may befreely opened and closed. The bar 720 may include one or more hooks 730for storing welding tools and accessories, such as welding cables 900.The bar may also be removed from the first pair of brackets 710 a and/orfreely transferred between the first pair of brackets 710 a and thesecond pair of brackets 710 b as needed. The bar may further be removedfrom the second pair of brackets 710 b and/or freely transferred betweenthe second pair of brackets 710 b and the first pair of brackets 710 aas needed.

A welding cart with a cable management system, as fully described above,may therefore provide additional, easily accessible storage space forwelding tools and accessories while being compatible with a wide varietyof portable welding machines.

One way of describing a welding cart with a cable management system isas follows: a welding cart may have four sides and a base having alength and a width. The base may also have four sides. The welding cartmay have a pair of support frames. Each support frame may include anupper arm, a lower arm, and a substantially vertical arm connecting oneend of the upper arm to one end of the lower arm. The lower arm of asupport frame may be attached to one side of the base and the lower armof the other support frame may be attached to an opposing side of thebase. The welding cart may include an upper shelf attached to the upperarm of each side support. The upper shelf may be adapted to support awelding machine. The welding cart may include a plurality of uprightmembers. At least one upright member may be attached to one side supportand at least one upright member may be attached to an opposing sidesupport. The welding cart may further comprise a plurality of wheelssupporting the cart.

The welding cart may also include a cable management system. The cablemanagement system may include a first pair of holders each having amounting arm and a base extending outward away from the base. Themounting arm of each holder may be attached to a separate uprightmember. The base of each holder may be disposed substantiallyperpendicular to the mounting arm. The cable management system mayfurther include a removable bar having a length and at least one hook.The transferable bar may be supported by the first pair of holders. Theremovable bar may be temporarily removed from the first pair of holders.

Another way of describing the welding cart having a cable managementsystem is as follows: a welding cart may have a frame, an upper shelfadapted to support a welding machine, a plurality of upright members, aplurality of wheels supporting the cart, a first pair of holdersdisposed on a side of the cart and each having a mounting plate mountedto a side of the welding cart and a support arm protruding from themounting plate and having a hole, a second pair of holders disposed onan opposite side of the cart and each having a mounting plate mounted toa side of the welding cart and a support arm protruding from themounting plate and having a hole, and a bar having a hook and at leasttwo pins each disposed proximate opposing ends of the bar. Each hole ina support arm may be adapted to releasably receive a corresponding pinof the bar such that the bar may be transferred from the first pair ofholders to the second pair of holders.

In one embodiment, each holder may be mounted to an upright member.

In one embodiment, the bar may be releasably secured to the first pairof holders and/or the second pair of holders by a pin-and-holemechanism. The pin-and-hole mechanism may include the hole disposed inthe support arm of a holder and a pin extending from the bar. The holeof the support arm may be adapted to releasably receive the pin of thebar.

In one embodiment, the support arm may further includes a sleeveextending from the hole. The sleeve may be adapted to releasably receivethe pin of the bar. The sleeve may further terminate in a floor.

In one embodiment, each holder may further comprise a second armextending upward from a side of the support arm opposite the mountingplate. The second arm may be adapted to secure welding cables on theholder.

In one embodiment, the at least one hook of the bar further includes anupwardly extending prong adapted to secure welding cables on the hook.

Yet another way of describing a welding cart having a cable managementsystem is as follows: a welding cart may have a frame defining opposingfirst and second sides. Said first side may define a first front cornerand a first rear corner. Said second side may define a second frontcorner and a second rear corner. Said frame may include a plurality ofupright members with one each of said plurality of upright members beingdisposed proximate each of said first and second front corners and saidfirst and second rear corners. A shelf may be disposed between saidframe first and second sides. Said shelf may be configured to support aconventional welding machine. A plurality of holders may be disposed onsaid frame. Said plurality of holders may include at least first andsecond holders disposed on two of said plurality of upright members.Said two of said plurality of upright members may be disposed on one ofsaid opposing first and second sides of said frame. A bar may define afirst end and a second end and may be configured to be selectivelymountable on and extending between said first and second holders. Saidfirst end may engage said first holder and said second end may engagesaid second holder.

In one embodiment, said bar may include at least one accessory holderconfigured to releasably receive at least one conventional weldingaccessory.

In one embodiment, each of said plurality of holders may be furtherconfigured to releasably receive at least one welding accessory.

In one embodiment, each of said plurality of holders may define a firstmating portion and each of said first and second ends of said bar maydefine a second mating portion. Said first mating portion and saidsecond mating portion each may be configured to be cooperatively engagedto releasably secure said bar first and second ends to said first andsecond holders.

In one embodiment, said first mating portion may be a receptacle andsaid second mating portion may be a post configured to be closelyreceived within said receptacle. Each said receptacle and said each saidpost may define a cylinder of a selected cross-sectional shape.

In one embodiment, said plurality of holders may include a first pair ofholders. Said first pair of holders may include said first holderdisposed on said upright member disposed proximate said first frontcorner of said frame and said second holder disposed on said uprightmember disposed proximate said first rear corner of said frame. Saidplurality of holders may include a second pair of holders including saidfirst holder disposed on said upright member disposed proximate saidsecond front corner of said frame and said second holder disposed onsaid upright member disposed proximate said second rear corner of saidframe. Said bar may be selectively secured to either of said first pairof holders and said second pair of holders in order to selectivelyorient said bar in one of a first orientation on said first side of saidframe and a second orientation on said second side of said frame.

While various embodiments of the invention have been described, it willbe apparent to those of ordinary skill in the art that many moreembodiments and implementations are possible within the scope of theinvention. Accordingly, the invention is not to be restricted except inlight of the attached claims and their equivalents.

We claim:
 1. A welding cart having a cable management system,comprising: a frame defining opposing first and second sides, said firstside defining a first front corner and a first rear corner, said secondside defining a second front corner and a second rear corner, said frameincluding a plurality of upright members with one each of said pluralityof upright members being disposed proximate each of said first andsecond front corners and said first and second rear corners; a shelfdisposed between said frame first and second sides, said shelf beingconfigured to support a conventional welding machine; a plurality ofholders disposed on said frame, said plurality of holders including atleast first and second holders disposed on two of said plurality ofupright members, said two of said plurality of upright members beingdisposed on one of said opposing first and second sides of said frame;and a bar defining a first end and a second end and being configured tobe selectively mountable on and extending between said first and secondholders, said first end engaging said first holder and said second endengaging said second holder.
 2. A welding cart according to claim 1,wherein said bar includes at least one accessory holder configured toreleasably receive at least one conventional welding accessory.
 3. Awelding cart according to claim 1, wherein each of said plurality ofholders is further configured to releasably receive at least one weldingaccessory.
 4. A welding cart according to claim 1, wherein each of saidplurality of holders defines a first mating portion and each of saidfirst and second ends of said bar defines a second mating portion, saidfirst mating portion and said second mating portion each beingconfigured to be cooperatively engaged to releasably secure said barfirst and second ends to said first and second holders.
 5. A weldingcart according to claim 4, wherein said first mating portion is areceptacle and said second mating portion is a post configured to beclosely received within said receptacle, wherein each said receptacleand said each said post defines a cylinder of a selected cross-sectionalshape.
 6. A welding cart according to claim 1, wherein said plurality ofholders includes: a first pair of holders including said first holderdisposed on said upright member disposed proximate said first frontcorner of said frame and said second holder disposed on said uprightmember disposed proximate said first rear corner of said frame, and asecond pair of holders including said first holder disposed on saidupright member disposed proximate said second front corner of said frameand said second holder disposed on said upright member disposedproximate said second rear corner of said frame, wherein said bar isselectively secured to either of said first pair of holders and saidsecond pair of holders in order to selectively orient said bar in one ofa first orientation on said first side of said frame and a secondorientation on said second side of said frame.
 7. A welding cart havinga cable management system, comprising: a frame defining opposing firstand second sides, said first side defining a first front corner and afirst rear corner, said second side defining a second front corner and asecond rear corner, said frame including a plurality of upright memberswith one each of said plurality of upright members being disposedproximate each of said first and second front corners and said first andsecond rear corners; a shelf disposed between said frame first andsecond sides, said shelf being configured to support a conventionalwelding machine; a plurality of holders disposed on said frame; saidplurality of holders including at least first and second holdersdisposed on two of said plurality of upright members, said two of saidplurality of upright members being disposed on one of said opposingfirst second sides of said frame; and a bar defining a first and asecond end and being configured to be selectively mountable on andextending between said first and second holders, said first end engagingsaid first holder and said second end engaging said second holder; whereeach of said plurality of holders defines a first mating portion andeach of said first and second ends of said bar defines a second matingportion, said first mating portion and said second mating portion eachbeing configured to be cooperatively engaged to releasably secure saidbar first and second ends to said first and second holders.
 8. A weldingcart according to claim 7, wherein said bar includes at least oneaccessory holder configured to releasably receive at least oneconventional welding accessory.
 9. A welding cart according to claim 7,where each of said plurality of holders is further configured toreleasably receive at least one welding accessory.
 10. A welding cartaccording to claim 7, wherein said first mating portion is a receptacleand said second mating portion is a post configured to be closelyreceived within said receptacle, wherein each said receptacle and saideach said post defines a cylinder of a selected cross-sectional shape.11. A welding cart according to claim 7, wherein said plurality ofholders includes: a first pair of holders including said first holderdisposed on said upright member disposed proximate said first frontcorner of said frame and said second holder disposed on said uprightmember disposed proximate said first rear corner of said frame, and asecond pair of holders including said first holder disposed on saidupright member disposed proximate said second front corner of said frameand said second holder disposed on said upright member disposedproximate said second rear corner of said frame, wherein said bar isselectively secured to either of said first pair of holders and saidsecond pair of holders in order to selectively orient said bar in one ofa first orientation on said first side of said frame and a secondorientation on said second side of said frame.
 12. A welding cart havinga cable management system, comprising: a frame defining opposing firstand second sides, said first side defining a first front corner and afirst rear corner, said second side defining a second front corner and asecond rear corner, said frame including a plurality of upright memberswith one each of said plurality of upright members being disposedproximate each of said first and second front corners and said first andsecond rear corners; a shelf disposed between said frame first andsecond sides, said shelf being configured to support a conventionalwelding machine; a plurality of holders disposed on said frame, saidplurality of holders including at least first and second holdersdisposed on two of said plurality of upright members, said two of saidplurality of upright members being disposed on one of said opposingfirst second sides of said frame; a first pair of holders including saidfirst holder disposed on said upright member disposed proximate saidfirst front corner of said frame and said second holder disposed on saidupright member disposed proximate said first rear corner of said frame,and a second pair of holders including said first holder disposed onsaid upright member disposed proximate said second front corner of saidframe and said second holder disposed on said upright member disposedproximate said second rear corner of said frame, a bar defining a firstand a second end and being configured to be selectively mountable on andextending between said first and second holders, said first end engagingsaid first holder and said second end engaging said second holder; whereeach of said plurality of holders defines a first mating portion andeach of said first and second ends of said bar defines a second matingportion, said first mating portion and said second mating portion eachbeing configured to be cooperatively engaged to releasably secure saidbar first and second ends to said first and second holders; where saidbar is selectively secured to either of said first pair of holders andsaid second pair of holders in order to selectively orient said bar inone of a first orientation on said first side of said frame and a secondorientation on said second side of said frame.